I actually got to meet Leon back in 2008. He came to our yearly Henson Reynolds Reunion which we hold every June in the DFW area. Nearly everything I have on my McCaa line came from him. I am SO great-full for his research. I emailed him last night asking for his help to verify info I found linking Cassendra Lee's line back to the mayflower.
From Leon i learned Her dad was James P Lee
Her Grandfather was Thomas Bell Lee.
What I found:
Thomas's parents were John Hancock Lee and Elizabeth Bell
Grand parents: Hancock Lee and Mary Willis
G Grand Parents: Capt Hancock Lee and Sarah Allerton
Capt Hancock Lee's brother Richard had a son named Thomas and Thomas's son Frances Lightfoot Lee is a signer of the declaration.
Sarah was the daughter of Isaac Allerton and Fear Brewster who came over on the Mayflower.
I would love for others to confirm my findings